Datasheet

 1997 Microchip Technology Inc. DS30390E-page 19
PIC16C7X
4.0 MEMORY ORGANIZATION
4.1 Program Memory Organization
The PIC16C7X family has a 13-bit program counter
capable of addressing an 8K x 14 program memory
space. The amount of program memory available to
each device is listed below:
For those devices with less than 8K program memory,
accessing a location above the physically implemented
address will cause a wraparound.
The reset vector is at 0000h and the interrupt vector is
at 0004h.
FIGURE 4-1: PIC16C72 PROGRAM
MEMORY MAP AND STACK
Applicable Devices
72 73 73A 74 74A 76 77
Device
Program
Memory
Address Range
PIC16C72 2K x 14 0000h-07FFh
PIC16C73 4K x 14 0000h-0FFFh
PIC16C73A 4K x 14 0000h-0FFFh
PIC16C74 4K x 14 0000h-0FFFh
PIC16C74A 4K x 14 0000h-0FFFh
PIC16C76 8K x 14 0000h-1FFFh
PIC16C77 8K x 14 0000h-1FFFh
PC<12:0>
13
0000h
0004h
0005h
07FFh
1FFFh
Stack Level 1
Stack Level 8
Reset Vector
Interrupt Vector
On-chip Program
Memory
CALL, RETURN
RETFIE, RETLW
0800h
User Memory
Space
FIGURE 4-2: PIC16C73/73A/74/74A
PROGRAM MEMORY MAP
AND STACK
PC<12:0>
13
0000h
0004h
0005h
07FFh
0800h
0FFFh
1000h
1FFFh
Stack Level 1
Stack Level 8
Reset Vector
Interrupt Vector
On-chip Program
On-chip Program
Memory (Page 1)
Memory (Page 0)
CALL, RETURN
RETFIE, RETLW
User Memory
Space